RFC 1749 802.5 Station Source Routing MIB using SMIv2 December 19942. The SNMPv2 Network Management Framework
The SNMPv2 Network Management Framework consists of four major
components. They are:
o RFC 1442 [1] which defines the SMI, the mechanisms used for
describing and naming objects for the purpose of management.
o STD 17, RFC 1213 [2] defines MIB-II, the core set of managed
objects for the Internet suite of protocols.
o RFC 1445 [3] which defines the administrative and other
architectural aspects of the framework.
o RFC 1448 [4] which defines the protocol used for network
access to managed objects.
The Framework permits new objects to be defined for the purpose of
experimentation and evaluation.
2.1. Object Definitions
Managed objects are accessed via a virtual information store, termed
the Management Information Base or MIB. Objects in the MIB are
defined using the subset of Abstract Syntax Notation One (ASN.1)
defined in the SMI. In particular, each object type is named by an
OBJECT IDENTIFIER, an administratively assigned name. The object
type together with an object instance serves to uniquely identify a
specific instantiation of the object. For human convenience, we
often use a textual string, termed the descriptor, to refer to the
object type.
3. Overview
This memo defines a single table: the 802.5 Station Source Routing
Table, which contains the source routes known by a end-station on an
IEEE 802.5 Token Ring network in which IEEE source-routing is in use.
3.1. Source Routing
Source routing extends the 802.5 protocol [8] by assigning a unique
ring number to each ring within the extended LAN, and a bridge number
to each source routing bridge's connection to a ring. A Routing
Information Field (RIF) must be included in frames which need to
traverse multiple rings. The format of the RIF is:
McCloghrie, Baker & Decker [Page 2]